Off-line cleaning device for tubular membrane

Abstract

The utility model discloses a tubular membrane off-line cleaning device which comprises a cleaning tank, the cleaning tank is vertically arranged, a cover plate is arranged on the upper portion of the cleaning tank, a lower drainage pipe is arranged on the lower portion of the cleaning tank, a spraying opening is formed in the cover plate, one end of the cover plate is connected with a water inlet pipe, the water inlet pipe is connected with the spraying opening, and a clamping mechanism and a grating plate are arranged in the cleaning tank. And an ultrasonic mechanism is arranged in the cleaning tank. A scraper mechanism is arranged on the lower portion of the grating plate and used for scraping dirt on the surface of the grating plate. And an upper drainage pipe is arranged on the cleaning tank and is arranged above the grating plate. The clamping mechanism comprises a fixed frame, a movable frame and clamping plates, one clamping plate is rotationally installed on the fixed frame, and the other clamping plate is rotationally installed on the movable frame. And a weighing mechanism is arranged at the bottom of the cleaning tank, is supported below the cleaning tank and is used for weighing the weight of the cleaning tank. According to the utility model, the automatic off-line cleaning of the tubular membrane can be realized, the artificial damage to the tubular membrane is reduced, and the integrity of a membrane assembly is kept to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the field of offline cleaning equipment for tubular membranes, and specifically relates to an offline cleaning device for tubular membranes. Background Art

[0002] In a water treatment system, after the automatic cleaning of the system cannot restore the membrane flux of the tubular membrane, the method of offline cleaning, that is, manual membrane passing, is generally adopted. Since the tubular membrane is generally long, the internal pores are very small, and the inside is extremely easy to be damaged, so the requirements for membrane passing are very high. In traditional offline cleaning, using small-pressure clear water and manually inserting a metal tube into each small pore is extremely demanding on the professional ability and patience of the operator. If the force is too large, the hard tube will pierce the inside of the membrane, resulting in membrane damage; if the force is too small, the inside of the membrane cannot be dredged; if the water flow pressure is too small, the inside of the membrane cannot be dredged; if the water flow pressure is too large, the membrane will be damaged; generally speaking, traditional offline cleaning is time-consuming and laborious, and has high requirements for operators. The structure of the new cleaning equipment is complex and the use cost is too high. Content of the Utility Model

[0003] The purpose of the utility model is to provide an offline cleaning device for tubular membranes, so as to solve the problems of inconvenient cleaning or high cleaning cost existing in the existing offline cleaning devices for tubular membranes.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an offline cleaning device for tubular membranes, including a cleaning tank, the cleaning tank is arranged vertically, a cover plate is arranged on the upper part of the cleaning tank, a lower drain pipe is arranged on the lower part of the cleaning tank, a spray port is arranged on the cover plate, one end of the cover plate is connected with a water inlet pipe, the water inlet pipe is connected with the spray port, a clamping mechanism and a grid plate are arranged in the cleaning tank, and an ultrasonic mechanism is arranged in the cleaning tank.

[0005] As a further improvement of the above technical solution:

[0006] A scraping mechanism is arranged below the grid plate for scraping the dirt on the surface of the grid plate.

[0007] An upper drain pipe is arranged on the cleaning tank, and the upper drain pipe is arranged above the grid plate.

[0008] The clamping mechanism includes a fixed frame, a movable frame and clamping plates, one clamping plate is rotatably installed on the fixed frame, and the other clamping plate is rotatably installed on the movable frame.

[0009] A weighing mechanism is arranged at the bottom of the cleaning tank, and the weighing mechanism is supported below the cleaning tank for weighing the weight of the cleaning tank.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The off-line cleaning device for tubular membranes of the present utility model is easy to operate, can achieve automatic off-line cleaning, reduce the artificial damage to the tubular membranes, and maintain the integrity of the membrane modules to the greatest extent. The cleaning is relatively thorough, can restore the membrane flux to the greatest extent, extend the service life of the tubular membranes, and reduce the operation cost. It is applicable to various types of tubular membrane modules and has a wide range of uses. The cleaning tank is arranged vertically, reducing the floor area and facilitating on-site use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is one of the overall structural schematic diagrams of the off-line cleaning device for tubular membranes of the present utility model;

[0013] Figure 2 is the schematic diagram of the clamping plate installation structure of the present utility model;

[0014] Figure 3 is the second overall structural schematic diagram of the off-line cleaning device for tubular membranes of the present utility model.

[0015] Reference numerals: 1, cleaning tank; 10, lower drain pipe; 11, ultrasonic mechanism; 12, weighing mechanism; 13, upper drain pipe; 2, fixing frame; 3, clamping plate; 4, movable frame; 5, grid plate; 6, scraping mechanism; 7, cover plate; 8, spray port; 9, water inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figure 1 and Figure 2 shown, the off-line cleaning device for tubular membranes in this embodiment includes a cleaning tank 1, which is arranged vertically. A cover plate 7 is provided at the upper part of the cleaning tank 1, and a lower drain pipe 10 is provided at the lower part of the cleaning tank 1. A spray port 8 is provided on the cover plate 7. One end of the cover plate 7 is connected with a water inlet pipe 9, and the water inlet pipe 9 is connected to the spray port 8. A clamping mechanism and a grid plate 5 are arranged in the cleaning tank 1, and an ultrasonic mechanism 11 is arranged in the cleaning tank 1. A scraping mechanism 6 is provided below the grid plate 5. A movable seal is provided between the scraping mechanism 6 and the cleaning tank 1, and the passage on the grid plate 5 is dredged by pushing the scraping mechanism 6. The clamping mechanism includes a fixed frame 2, a movable frame 4 and clamping plates 3. One clamping plate 3 or a group of clamping plates 3 is rotatably installed on the fixed frame 2, and the other clamping plate 3 or another group of clamping plates 3 is rotatably installed on the movable frame 4. It can rotate slightly around the fixed frame 2 or the movable frame 4, and the rotation angle is ±15°. The rotation direction here can be set according to the actual situation. The clamping plate 3 can be set to be arc-shaped for clamping. A weighing mechanism 12 is provided at the bottom of the cleaning tank 1, and the weighing mechanism 12 is supported below the cleaning tank 1 for weighing the weight of the cleaning tank 1.

[0021] As Figure 3 shown, different from Embodiment 1, an upper drain pipe 13 is provided on the cleaning tank 1 of this embodiment, and the upper drain pipe 13 is arranged above the grid plate 5. In order to prevent large impurities from not passing through the grid plate 5, the upper residue is discharged through the upper drain pipe 13.

[0022] During use, open the top cover plate 7, place the tubular membrane in the cleaning tank 1, push the movable frame 4 to make the clamping plate 3 clamp the outer wall of the tubular membrane, open the weighing mechanism 12, and the current weight of the tubular membrane can be measured. Close the top cover plate 7, connect tap water or cleaning liquid to the top water inlet pipe 9, and connect the lower drain pipe 10 to the discharge place through a valve.

[0023] Close the lower drain pipe 10. Tap water or cleaning liquid enters the cleaning tank 1 through the spray nozzle 8. Part of it flushes the outer wall of the tubular membrane, and part of it flushes the internal membrane module of the tubular membrane. After the liquid level in the cleaning tank 1 submerges the tubular membrane, turn on the ultrasonic mechanism 11 to perform vibration cleaning on the inside of the membrane using ultrasonic waves. The impurities and sludge inside the membrane will be discharged and enter the bottom of the cleaning tank 1 after passing through the grille plate 5. When the inside becomes turbid, the valve of the lower drain pipe 10 can be opened to drain the dirty water inside. To avoid clogging of the grille plate 5, drainage can be first carried out through the upper drain pipe 13 to discharge the impurities that have not passed through the grille plate 5, and then drainage is carried out through the lower drain pipe 10. By checking the weight of the weighing mechanism 12, the cleaning effect can be judged. If it exceeds the estimated weight of the tubular membrane, it means that the inside of the tubular membrane has not been cleaned thoroughly and there are still impurities or sludge, and the above cleaning operation needs to be repeated.

[0024] After the inside of the tubular membrane is cleaned, open the valve of the lower drain pipe 10, turn on the tap water, and flush the inner and outer walls of the membrane module through the spray nozzle 8. After the flushing is completed, under the action of gravity, the internal cleaning water drains, and then the tubular membrane can be taken out for use, completing the off-line cleaning.

[0025] This device can be applicable to tubular membranes of different sizes. The clamping plate 3 can rotate slightly, which is more conducive to the fixation of the tubular membrane. During the cleaning process, to prevent the impurities washed out from the tubular membrane from accumulating and blocking the grille plate 5, resulting in the inability to discharge the impurities inside the tubular membrane and incomplete cleaning, the scraper mechanism 6 can be used to clean and dredge the grille plate 5, so that the impurities and sludge inside the tubular membrane can be smoothly discharged. This device has ultrasonic cleaning while soaking, which can gradually soften the solid sludge inside the tubular membrane module, make it loose, and under the action of vibration and gravity, it can be removed from the inside of the tubular membrane module, playing a cleaning role. At the same time, the spray nozzle part at the top can spray into the inside of the tubular membrane for flushing. Multiple cleaning makes the cleaning of the tubular membrane more thorough, and it can also be used for cleaning the cleaning tank for subsequent cleaning of other tubular membranes.

[0026] The above are only the embodiments of the present invention. Common knowledge such as the specific structure and characteristics known in the solution is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A tube membrane off-line cleaning device, comprising a cleaning tank (1), characterized in that: The cleaning tank (1) is arranged vertically. A cover plate (7) is provided at the upper part of the cleaning tank (1), a lower drain pipe (10) is provided at the lower part of the cleaning tank (1), a spray nozzle (8) is provided on the cover plate (7), one end of the cover plate (7) is connected with a water inlet pipe (9), the water inlet pipe (9) is connected with the spray nozzle (8), a clamping mechanism and a grid plate (5) are arranged in the cleaning tank (1), and an ultrasonic mechanism (11) is arranged in the cleaning tank (1).

2. The tubular membrane off-line cleaning device according to claim 1, characterized in that: A scraping mechanism (6) is provided below the grid plate (5) for scraping off the dirt on the surface of the grid plate (5).

3. The tubular membrane off-line cleaning device according to claim 1, characterized in that: An upper drain pipe (13) is provided on the cleaning tank (1), and the upper drain pipe (13) is arranged above the grid plate (5).

4. The tubular membrane off-line cleaning device according to claim 2, wherein: The clamping mechanism includes a fixed frame (2), a movable frame (4) and a clamping plate (3). One clamping plate (3) is rotatably installed on the fixed frame (2), and the other clamping plate (3) is rotatably installed on the movable frame (4).

5. The tubular membrane off-line cleaning device according to any one of claims 1 to 4, characterized in that: A weighing mechanism (12) is provided at the bottom of the cleaning tank (1), and the weighing mechanism (12) is supported below the cleaning tank (1) for weighing the weight of the cleaning tank (1).

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